Reinforced concrete chimney



March 8, 1949. l.. FAYE REINFORCED lCONCRETE CHIMNEY 4 Sheets-Sheet 1 Filed Dec. 22, 1945 Fiel m/entar a1/1s FYE f6 A Attorneys March 8, 1949. FAYE 2,463,607

REINFORCED CONCRETE CHIMNEY Filed Deo. 22, 1945 .Fie i 5G52.

4 Sheets-Sheet 2 I /m/erzor n az/ EWE March 8, 1949.

L. FAYE REINFORCED CONCRETE CHIMNEY Filed Dec. 22, 1945 k YYY 4 Sheets-Sheet 3 4 Sheets-Sheet 4 Filed Dec. 22, 1945 Patented Mar. 8, 1949 UNITED STATES PATENT OFFICE REINFORCED CONCRETE CHIMNEY Louis Faye, Paris, France Application December 22, 1945, Serial No. 636,677 In France April 5, 1945 This invention concerns the construction of chimneys, towers or like tubular structures with a polygonal or a circular section, and it aims at giving the same a monolithic character and a high resistance to stresses in all directions, which can be obtained with the aid of an extremely simple and compact framing equipment.

According to this invention, a chimney is erected by successive annular courses each of which is obtained with the aid of framings composed of panels arranged both at the inside and the outside of the corresponding chimney walls, the ends of said panels being backed on special pre-made reinforced concrete angle pieces located at the edges of the chimney; said angle pieces are apertured in such manner that the concrete as poured in will flow therethrough equally in all directions, whereby no interruption of continuity is created that could decrease the desired resistance of the chimney after the concrete has set.

The invention will be more fully understood by reference to the appended drawing whereby an embodiment of the same is illustrated by way of example, it being understood that its scope is by no means limited thereby.

Figure 1 is an elevational view of a portion of the chimney as seen from the inside and partly in sectional view taken on lines I-I and I-I' in Fig. 2.

Figure 2 is a corresponding horizontal sectional view taken on line II-lI in Fig. 1.

Figure 3 is an enlarged elevational view of a corner piece.

Figures 4 and 5 are a vertical and a horizontal sectional view respectively of said corner-piece, taken on lines IV-IV and V-V in Fig. 3.

Figure 6 is a perspective view of a portion of the chimney in the course of its erection.

Figure 7 is a plan view showing a portion of the framing.

Figure 8 is an enlarged vertical sectional view taken on line VIII- VIII in Fig. 7.

Figure 9 is a perspective view of a modification of the corner-piece.

Figures 10 and 11 are a vertical and a horizontal sectional view respectively of a chimney comprising corner-pieces of the latter design.

Figure 12 is a perspective View of a modification of the corner-piece.

Figures 13 and 14 show said element in vertical and horizontal sectional view respectively.

The chimney illustrated has the shape of a hollow prism (or a frustum of a pyramid with slightly oblique faces) octagonal in section. It is made of reinforced concrete I cast in combination with pre-made reinforced concrete corner-pieces 2 which are incorporated in the concrete I and form a monolithic block therewith.

That result is attained by virtue of the peculiar shape of corner-pieces 2, which comprise a pair of vertical parallel plates a and b rigidly braced to each other by cross bars c located adjacent to one of the vertical edges of said plates. The vertical space between either cross bar of each corner-piece 2 is very appreciable as compared to the cross-section of said cross-bars, and its thickness between either plate a, b is at least equal to the thickness of the concrete providing the faces of the chimney. Moreover, the vertically successive corner-pieces are turned alternately in reverse directions in the successive courses, so that in one and the same vertical series their cross bars c are located at either side of the radial plane through the axis of the chimney and the middles of plates a and b; this contributes to have the cross-bars spaced as much as possible and to avoid the danger of a weakening of the structure that might arise from the presence of substantial or closely spaced divisions in the mass of concrete l.

The plates a and b could also be braced to each other simply by iron bars substituted for crossbars c.

The corner-pieces could also have a I-shaped horizontal section.

Figures 12 to 14 illustrate another modification in which the inner plate b' of the hollow element has the shape of a dihedron while the other plate a comprises three [portions both end ones of which are parallel to the faces of said dihedron; as in the previously described corner-pieces, the two plates are braced by cross-bars c which preferably have a trapezoid section.

As a result of these particular provisions and of the distance existing between plates a and b, the chimney edges can possess an extremely high resistance, which makes the whole structure completely indeformable.

The chimney is erected preferably as follows: Once the vertical mountings 3 are anchored in the foundation or sole at the desired places, a rst course of corner-pieces 2 are laid, their locations, set and plumb being carefully checked, after which the horizontal mountings 4 are laid. Thereafter, the framing is assembled, which is composed of wood panels 5 and 6 having their ends cut to match the side faces of the cornerpieces 2; besides, said faces extend at an angle to the radial plane X-X normal to the corresponding chimney wall.

'The Ipanels 5 and 8 are held in engagement with the bearing faces by means of suitable bolts or clamps 1; moreover, they are supported vertically by swingable lugs 8 borne on top of the corner-pieces 2. Such a framing equipment 5, 6, 'l and 8 is Very simple, compact and requires no adjustment.

'Ihe concrete then is cast between the panels, and at the same time flows into the corner-pieces. As soon as it has become sufciently rm the lugs B are swung clear, the panels taken away, the outside of the concrete smoothed out, and the next course is laid, care being taken that the corner-pieces are in properly alternating relation, with their cross-bars c, to the ones in the subjacent course. The same framing as before is then assembled, if necessary after one end of the panels 4, has been cut off slightly to account for the decrease in the spacing of corner-pieces 2 due to the batter of the chimney walls. The same panels thus can serve throughout the erection.

Of course, instead oi' wooden panels, sliding sheet metal or other panels made of any suitable material can be used. It should be pointed out that the main purpose of the pre-made pieces is to serve as rests for the framing panels 5 and 6 whose side edges are clamped between the side bevels provided on the corner pieces (Figs. 2 and 6).

The successive inner framing members necessary for the erection can be supported by projections 9 cast with some of the corner-pieces, e. g. as shown in Figs. 9 and 10.

Such projections can also be used to support a shielding lagging arranged Within `the chimney (Figs. 10 and 11); cleats l0 will be laid on pro- `ections 9 as supporting means for the elements Il 0f the lagging; since said elements are supported separately, they can expand freely. The drawing shows that a clearance I 2 can be provided between the chimney wall and the lagging elements Il in order to allow the chimney being cooled by air circulation.

The embodiment described above, in addition to affording the advantage of providing a very strong monolithic structure having smooth and perfectly uniform walls, is also a Very economical one by virtue of its simplicity and of thesavings in framing and scaffolding equipment ycombined with the possibility of laying an inner lining.

It is to be understood that this invention is not limited to the details of practice disclosed in the specification or shown in the drawing, and that the shape of the corner-pieces and of the structure as a Whole can be varied, since the application of the invention to the erection of a chimney is given only by way of example.

In particular, the framing can be assembled after several instead of each course of hollow elements have been laid, when the height of the framing panels naturally will correspond to the total heiglt of the several courses.

What I claim as my invention and desire to secure by Letters Patent is:

1. A monolithic chimney or like tubular structure composed of prefabricated elements and of concrete poured on the spot, characterized thereby that it is made up of prefabricated corner pieces pl-led up in substantially vertical rows about the axis of the chimney, all of the said pieces being designed to have concrete run therethrough in both the vertical and the peripheral directions of the horizontal sections of the chimney, and of a tubular mass of poured concrete extending continuously over substantially the height of the chimney and in which said corner pieces are incorporated Without interfering with the compactness of the said tubular mass of concrete.

2. In a chimney according to claim 1 prefabricated corner pieces formed with a pair of vertical Walls intended respectively to occupy an outer and an inner angle of the chimney and small-section cross bars bracing said walls to' each other at only one side thereof.

3. In a chimney according to claim 1, prefabrlcated one-piece concrete corner pieces formed with a pair of vertical walls intended respectively to occupy an outer and an inner angle of the chimney' and small-sectioncross bars bracing said Walls to each other at only one side thereof.

LOUIS FAYE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,188,919 England June 27, 1916 FOREIGN PATENTS Number Country Date 484,426 France 1917 597,469 France 1925 

